It seems that this Extension is crashing VS 2015 sometimes. We don't have time to investigate further, if someone wants to, the code is on github below.
Spell Checking for multiple Languages in VisualStudio. This tool is a fork of the other Spell Checker. It can check all source documents for spelling errors in multiple languages.
Languages can be configured, and custom dic or lex dictionaries can be specified.
If you specify mutliple languages, the documents are checked in multiple languages, to enable for mixed language documents.
We are looking for developers to help on this OpenSource project. What needs to be done is to implement support for NHunspell as an alternative to the WPF spellchecker.
You can checkout the sourcecode from here: https://github.com/simonegli8/Spellchecker
Please contact us on firstname.lastname@example.org for further assistance on this.